[Qemu-devel] [PATCH 09/19] Change 'query-version' to output broken down version string

["Daniel P. Berrange" <berrange@redhat.com>]

A previous discussion brought up the fact that clients should
not have to parse version string from QMP, it should be given
to them pre-split.

Change query-version output format from:

  { "qemu": "0.11.50", "package": "" }

to:

  { qemu: { "major": 0, "minor": 11, "micro": 5 }, "package": "" }

The major, minor & micro keys are all integer values. package is
an arbitrary string whose format is defined by the OS package
maintainer.

There is no need to preserve the existing string format of the 'qemu'
key, since QMP is not yet declared stable.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 monitor.c |   47 +++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/monitor.c b/monitor.c
index 15b53b9..f0406e8 100644
--- a/monitor.c
+++ b/monitor.c
@@ -670,17 +670,56 @@ help:
 static void do_info_version_print(Monitor *mon, const QObject *data)
 {
     QDict *qdict;
+    QDict *qemu;
 
     qdict = qobject_to_qdict(data);
+    qemu = qdict_get_qdict(qdict, "qemu");
 
-    monitor_printf(mon, "%s%s\n", qdict_get_str(qdict, "qemu"),
-                                  qdict_get_str(qdict, "package"));
+    monitor_printf(mon, "%" PRId64 ".%" PRId64 ".%" PRId64 "%s\n",
+		   qdict_get_int(qemu, "major"),
+		   qdict_get_int(qemu, "minor"),
+		   qdict_get_int(qemu, "micro"),
+		   qdict_get_str(qdict, "package"));
 }
 
+
+/**
+ * do_info_version(): Show QEMU version
+ *
+ * Return a QDict with the following information:
+ *
+ * - "qemu": QEMU upstream version
+ * - "package": QEMU packager's version
+ *
+ * The 'qemu' key value is a QDict containing three
+ * integer values
+ *
+ * - "major": QEMU's major version
+ * - "minor": QEMU's minor version
+ * - "micro": QEMU's micro version
+ *
+ * The 'package' key value is a string in an format
+ * defined by the OS distributor to reflect their
+ * packaging of QEMU.
+ *
+ * Example:
+ *
+ * { qemu: { "major": 0, "minor": 11, "micro": 5 }, "package": "" }
+ */
 static void do_info_version(Monitor *mon, QObject **ret_data)
 {
-    *ret_data = qobject_from_jsonf("{ 'qemu': %s, 'package': %s }",
-                                   QEMU_VERSION, QEMU_PKGVERSION);
+    const char *version = QEMU_VERSION;
+    int major = 0, minor = 0, micro = 0;
+    char *tmp;
+
+    major = strtol(version, &tmp, 10);
+    tmp++;
+    minor = strtol(tmp, &tmp, 10);
+    tmp++;
+    micro = strtol(tmp, &tmp, 10);
+
+    *ret_data = qobject_from_jsonf("{ 'qemu': { 'major': %d, 'minor': %d, 'micro': %d }, 'package': %s }",
+                                   major, minor, micro, QEMU_PKGVERSION);
 }
 
 static void do_info_name_print(Monitor *mon, const QObject *data)
-- 
1.6.6.1